package com.heima.wemedia.service.impl;

import com.alibaba.fastjson.JSONArray;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.heima.apis.article.IArticleClient;
import com.heima.common.aliyun.GreenImageScan;
import com.heima.common.aliyun.GreenTextScan;
import com.heima.common.tess4j.Tess4jClient;
import com.heima.file.service.FileStorageService;
import com.heima.model.article.dtos.ArticleDto;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.pojos.WmChannel;
import com.heima.model.wemedia.pojos.WmNews;
import com.heima.model.wemedia.pojos.WmSensitive;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.utils.common.SensitiveWordUtil;
import com.heima.wemedia.mapper.WmChannelMapper;
import com.heima.wemedia.mapper.WmNewsMapper;
import com.heima.wemedia.mapper.WmSensitiveMapper;
import com.heima.wemedia.mapper.WmUserMapper;
import com.heima.wemedia.service.WmNewsAutoScanService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.jsoup.helper.StringUtil;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.sql.Wrapper;
import java.util.*;
import java.util.stream.Collectors;

@Service
@Slf4j
@Transactional
public class WmNewsAutoScanServiceImpl implements WmNewsAutoScanService {
    @Autowired
    private WmNewsMapper wmNewsMapper;

    /**
     * 自媒体文章审核
     * @param id 自媒体文章id
     */
    @Override
    @Async //表明当前方法是一个异步方法
    public void autoScanWmNews(Integer id) {
    //1查询自媒体文章
        WmNews wmNews = wmNewsMapper.selectById(id);
        if(wmNews==null){
            throw new RuntimeException("WmNewsAutoScanServiceImpl-自媒体文章不存在");
        }
        if(wmNews.getStatus().equals(WmNews.Status.SUBMIT.getCode())){
            //从内容中提取纯文本和图片
            Map<String,Object> textAndImages = handleTextAndImages(wmNews);

            //自管理的敏感词过滤
            boolean isSensitive=handleSensitiveScan((String) textAndImages.get("content"),wmNews);
            if (!isSensitive)return;

            //2审核文本内容 阿里云接口
            boolean isTextScan ;//=handleTextScan((String) textAndImages.get("content"),wmNews);
            isTextScan=true;//没有申请阿里云的接口，先默认都是审核通过
            if(!isTextScan)return;

            //3审核图片 阿里云接口
            boolean isImagesScan = handleImagesScan((List<String>) textAndImages.get("images"), wmNews);
//            isImagesScan=true;//没有申请阿里云的接口，先默认都是审核通过
            if(!isImagesScan)return;

            //4审核成功 保存app端接口
            ResponseResult responseResult = saveAppArticle(wmNews);
            if(!responseResult.getCode().equals(200)){
                throw new RuntimeException("WmNewsAutoScanServiceImpl-自媒体文章审核失败,保存app端相关文章数据失败");
            }
            //回填article_id
            wmNews.setArticleId((Long) responseResult.getData());
            updateWmNews(wmNews,(short) 9,"审核成功");


        }


    }
    @Autowired
    private WmSensitiveMapper wmSensitiveMapper;
    /**
     * 自管理的敏感词审核
     * @param content
     * @param wmNews
     * @return
     */
    private boolean handleSensitiveScan(String content, WmNews wmNews) {
        boolean flag = true;
        //获取所有的敏感词
        List<WmSensitive> wmSensitives = wmSensitiveMapper.selectList(Wrappers.<WmSensitive>lambdaQuery().select(WmSensitive::getSensitives));//返回的对象只有Sensitive字段，其他都为null,这样可以减轻数据库的查询压力
        List<String> sensitiveList = wmSensitives.stream().map(WmSensitive::getSensitives).collect(Collectors.toList());

        //初始化敏感词库
        SensitiveWordUtil.initMap(sensitiveList);

        //  查询文章中是否包含敏感词
        Map<String, Integer> map = SensitiveWordUtil.matchWords(content);
        if(map.size()>0){
            updateWmNews(wmNews,(short)2,"当前文章中包含违规内容"+map);
            flag=false;
        }
        return flag;
    }

    @Autowired
    private IArticleClient articleClient;
    @Autowired
    private WmChannelMapper wmChannelMapper;
    @Autowired
    private WmUserMapper wmUserMapper;

    /**
     * 保存app端相关的文章数据
     * @param wmNews
     */
    private ResponseResult saveAppArticle(WmNews wmNews) {
        ArticleDto dto = new ArticleDto();
        //属性拷贝
        BeanUtils.copyProperties(wmNews, dto);
        //文章的布局
        dto.setLayout(wmNews.getType());
        //频道
        WmChannel wmChannel = wmChannelMapper.selectById(wmNews.getChannelId());
        if(wmChannel!= null){
            dto.setChannelName(wmChannel.getName());
        }
        //作者
        dto.setAuthorId(wmNews.getUserId().longValue());
        WmUser wmUser = wmUserMapper.selectById(wmNews.getUserId());
        if(wmUser!=null){
            dto.setAuthorName(wmUser.getName());
        }
        //设置文章id
        if(wmNews.getArticleId()!=null){
            dto.setId(wmNews.getArticleId());
        }
        dto.setCreatedTime(new Date());
        ResponseResult responseResult = articleClient.saveArticle(dto);
        return responseResult;
    }

    @Autowired
    private FileStorageService fileStorageService;

    @Autowired
    private GreenImageScan greenImageScan;

    @Autowired
    private Tess4jClient tess4jClient;

    /**
     * 审核 图片 阿里云接口
     * @param images
     * @param wmNews
     * @return
     */
    private boolean handleImagesScan(List<String> images, WmNews wmNews) {
        boolean flag=true;
        if(images==null||images.size() == 0){
            return flag;
        }
        //下载图片 minio
        //图片去重
        images=images.stream().distinct().collect(Collectors.toList());
        ArrayList<byte[]> imageList = new ArrayList<>();

        try {
            for(String image: images){
                byte[] bytes = fileStorageService.downLoadFile(image);

                //byte数组转换为bufferedImage
                ByteArrayInputStream in = new ByteArrayInputStream(bytes);
                BufferedImage bufferedImage = ImageIO.read(in);
                //图片识别
                String result = tess4jClient.doOCR(bufferedImage);
                //过滤文字
                boolean isSensitive = handleSensitiveScan(result, wmNews);
                if(!isSensitive){
                    return isSensitive;
                }
                imageList.add(bytes);

            }
        }catch (Exception e){
            e.printStackTrace();
        }

        //审核图片
        try {
            Map map = null;//greenImageScan.imageScan(imageList);
            if(map!=null){
                //审核失败
                if(map.get("suggestion").equals("block")){
                    // 保存审核失败的文章内容
                    flag = false;
                    updateWmNews(wmNews, (short) 2, "当前文章中存在违规内容");
                }
                //不确定信息，需要人工审核
                if (map.get("suggestion").equals("review")) {
                    flag = false;
                    updateWmNews(wmNews, (short) 3, "当前文章中存在不确定内容");
                }
            }
        } catch (Exception e) {
            flag = false;
            e.printStackTrace();
        }
        return flag;

    }

    @Autowired
    private GreenTextScan greenTextScan;

    /**
     * 审核纯文本内容
     * @param content
     * @param wmNews
     * @return
     */
    private boolean handleTextScan(String content, WmNews wmNews) {
        //定义文章审核结果的标记
        boolean flag=true;
//        if((wmNews.getTitle()+"-"+content).length()==0){
//            return flag;
//        }始终为false
        try {
            Map map = greenTextScan.greeTextScan(wmNews.getTitle()+"-"+content);
            if(map!=null){
                //审核失败
                if(map.get("suggestion").equals("block")){
                    // 保存审核失败的文章内容
                    flag = false;
                    updateWmNews(wmNews, (short) 2, "当前文章中存在违规内容");
                }
                //不确定信息，需要人工审核
                if (map.get("suggestion").equals("review")) {
                    flag = false;
                    updateWmNews(wmNews, (short) 3, "当前文章中存在不确定内容");
                }
            }
        } catch (Exception e) {
            flag = false;
            e.printStackTrace();
        }
        return flag;
    }

    /**
     * 修改文章内容
     * @param wmNews
     * @param status
     * @param reason
     */
    private void updateWmNews(WmNews wmNews, short status, String reason) {
        wmNews.setStatus(status);
        wmNews.setReason(reason);
        wmNewsMapper.updateById(wmNews);
    }

    /**
     * 1,从自媒体文章的内容中提取文本和图片
     * 2,提取文章的封面图片
     * @param wmNews
     * @return
     */

    private Map<String, Object> handleTextAndImages(WmNews wmNews) {
        //存储纯文本内容
        StringBuilder stringBuilder = new StringBuilder();

        ArrayList<String> images = new ArrayList<>();

        //1 从自媒体文章的内容提取文本和照片
        if(StringUtils.isNoneBlank(wmNews.getContent())){
            List<Map> maps = JSONArray.parseArray(wmNews.getContent(), Map.class);
            for (Map map : maps) {
                if(map.get("type").equals("text")){
                    stringBuilder.append(map.get("value"));
                }
                if(map.get("type").equals("image")){
                    images.add((String) map.get("value"));
                }
            }
        }
        //2.提取文章的封面图片
        if(StringUtils.isNoneBlank(wmNews.getImages())){
            String[] split = wmNews.getImages().split(",");
            images.addAll(Arrays.asList(split));

        }
        HashMap<String, Object> resultMap = new HashMap<>();
        resultMap.put("content",stringBuilder.toString());
        resultMap.put("images",images);
        return resultMap;
    }
}
